The opinionated owner sounded off on Fox 4 in Dallas, offering a bet that might be just crazy enough to work. Here is more from TMZ.

"Donald, you shave your head, $1 million to any charity you want," Cuban said. Cuban says he's willing to up the offer to $2 million ... if it'll help seal the deal. So far, Trump has yet to respond ... but let's get serious -- ain't gonna happen.

As Tom Petty put it, waiting really is the hardest part.

Seeing as how none of this is my money, I really hope Trump bites at the offer and shaves off his infamous comb-over.

Having billionaires throw money around—like kids betting each other to stick their tongues to a frozen pole—should make us normal folks feel sick.

Until now.

Trump's hair has been depressed for decades, and it's time to put it out of its misery.